I don't see a dwg standard on the drawing
i thought it was the top surface..... this is a manufacturer of plasma machines..... i thought i remember it being top surface when i was doing aerospace parts...but not sure
Good Afternoon
I have a question regarding hole callouts
for a threaded hole with a counterbore where does the depth of the thread start
Is it from the top surface or from the bottom surface of the counterbore
Thanks in advance
